EP 2695398 A1 20140212 - REJECTING NOISE WITH PAIRED MICROPHONES
Title (en)
REJECTING NOISE WITH PAIRED MICROPHONES
Title (de)
RAUSCHUNTERDRÜCKUNG MIT GEPAARTEN MIKROFONEN
Title (fr)
REJET DE BRUIT AVEC DES MICROPHONES APPAIRÉS
Publication
Application
Priority
- US 201113078632 A 20110401
- US 2012030685 W 20120327
Abstract (en)
[origin: US2012253798A1] A system for combining signals includes a first microphone generating a first input signal having a first voice component and a first noise component, a second microphone generating a second input signal having a second voice component and a second noise component, a mixing circuit, and an adaptive filter. The mixing circuit applies a first gain having a value α to the first input signal to produce a first scaled signal, applies a second gain having a value 1−α to the second input signal to produce a second scaled signal, and sums the first scaled signal and the second scaled signal to produce a summed signal. The adaptive filter computes an updated value of α to minimize the energy of the summed signal based on the summed signal, the first input signal and the second input signal, and provides the updated value of α to the mixing circuit.
IPC 8 full level
G10L 21/0208 (2013.01); G10L 21/0216 (2013.01); H04R 1/10 (2006.01); H04R 1/40 (2006.01); H04R 3/00 (2006.01)
CPC (source: EP US)
G10L 21/0208 (2013.01 - EP US); H04R 1/1083 (2013.01 - EP US); H04R 1/406 (2013.01 - EP US); H04R 3/005 (2013.01 - EP US); G10L 2021/02165 (2013.01 - EP US); H04R 2410/07 (2013.01 - EP US)
Citation (search report)
See references of WO 2012135183A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
US 2012253798 A1 20121004; US 8620650 B2 20131231; CN 103503477 A 20140108; CN 103503477 B 20161012; EP 2695398 A1 20140212; EP 2695398 B1 20170503; WO 2012135183 A1 20121004
DOCDB simple family (application)
US 201113078632 A 20110401; CN 201280022142 A 20120327; EP 12714439 A 20120327; US 2012030685 W 20120327